129203 has 4 divisors (see below), whose sum is σ = 132000. Its totient is φ = 126408.

The previous prime is 129197. The next prime is 129209. The reversal of 129203 is 302921.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (129197) and next prime (129209).

It is a cyclic number.

It is not a de Polignac number, because 129203 - 2⁴ = 129187 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 129203.

It is not an unprimeable number, because it can be changed into a prime (129209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1328 + ... + 1421.

It is an arithmetic number, because the mean of its divisors is an integer number (33000).

2¹²⁹²⁰³ is an apocalyptic number.

129203 is a deficient number, since it is larger than the sum of its proper divisors (2797).

129203 is an equidigital number, since it uses as much as digits as its factorization.

129203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2796.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 129203 is about 359.4481881996. The cubic root of 129203 is about 50.5542337984.

The spelling of 129203 in words is "one hundred twenty-nine thousand, two hundred three".